FEATURES: 1) All parts are hand inspected off the line before packaging and once again by our team before shipment. 2) According to the old factory specifications. 3) Perfect match for the old car. 4) Easy installation. 5) Stable characteristics, high reliability. 6) Aftermarket Products with Premium Quality. Part Number: 44610-04050, 44610-04060, 44610-04040，53-2791 Working principle: A vacuum booster works by drawing in air as the engine is working, creating a vacuum on one side of the booster, The differential pressure relative to the normal air pressure on the other side is used to enhance the braking thrust. .
